74677

Appears in sequences

• a(n+1) = 4*a(n) + 11*a(n-1) - 2*a(n-2).at n=6A122885
• Interlaced merger of A122883, A122884 and A122885.at n=23A122886
• Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1111-0100-0100 pattern in any orientation.at n=11A146830
• Irregular triangle read by rows: T(n,i) = number of n X n semi-canonical binary matrices with exactly i 1's, where 0 <= i <= n^2.at n=72A268523